It is compatible with with the Related Smart Chargers (left column of this page)

Connect the sensor to these chargers and attached it to the battery pack. It will cut off power when battery pack temperature reaches 70 Deg C for additional protection to prevent battery pack from overcharging.How to use Temperature sensor:

Attach temperature sensor to battery pack inside firmly --- you can use electronic tape or glue to attach the sensor to the battery's surface

Plug (red, BEC ) connector into the temperature socket into the charger